非烃源岩层系断层和砂体对油气运聚的控制作用
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摘要
综合运用地震、测井、录井和分析化验等资料,对胜利油田滨海北部新近系断层和砂体对油气运聚的控制作用进行研究。结果表明:断层活动性控制油气分布的规模和层系,断层封闭能力控制油藏的最大含油高度,反向遮挡断层圈闭比顺向遮挡断层圈闭封闭能力强;砂地比小于0.15的砂层组不利于油气运聚,砂地比为0.15～0.5的砂组有利于油气聚集,大于0.5的砂层组有利于油气的输导;主干断层-主河道砂体型组合是最有利的油气运聚组合;"定区-定砂组-定点"的思路可以有效地指导非烃源岩层系河流相油气勘探。
Based on the data of seismic,well logging,mud logging and analysis assay,the control of hydrocarbon migration and accumulation by fault and sand body in the Neogene of northern coastal area,Shengli Oilfield was analyzed.The results show that fault activity controls the size and layers of oil and gas distribution.Fault sealing controls the maximum oil height of reservoir,and the sealing ability of fault-screened trap is better than that of co-dip fault-screened trap.The sand groups whose sand to formation thickness ratios are less than 0.15 are not benefical to hydrocarbon migration and accumulation,the sand groups whose sand to formation thickness ratios are 0.15-0.5 are considered favorable to hydrocarbon accumulation and the sand groups whose sand to formation thickness ratios are greater than 0.5 are beneficial to hydrocarbon migration.The combination of trunk fault and main channel sand body is the most favorable combination for hydrocarbon migration and accumulation.The petroleum exploration in non-source rocks layers can be effectively guided by the exploration thinking way of "fix district-fix sand group-fix point".
Based on the data of seismic,well logging,mud logging and analysis assay,the control of hydrocarbon migration and accumulation by fault and sand body in the Neogene of northern coastal area,Shengli Oilfield was analyzed.The results show that fault activity controls the size and layers of oil and gas distribution.Fault sealing controls the maximum oil height of reservoir,and the sealing ability of fault-screened trap is better than that of co-dip fault-screened trap.The sand groups whose sand to formation thickness ratios are less than 0.15 are not benefical to hydrocarbon migration and accumulation,the sand groups whose sand to formation thickness ratios are 0.15-0.5 are considered favorable to hydrocarbon accumulation and the sand groups whose sand to formation thickness ratios are greater than 0.5 are beneficial to hydrocarbon migration.The combination of trunk fault and main channel sand body is the most favorable combination for hydrocarbon migration and accumulation.The petroleum exploration in non-source rocks layers can be effectively guided by the exploration thinking way of "fix district-fix sand group-fix point".
引文
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[17]杨凤丽,印兴耀,吴国忱.埕岛油田河流相储层地震描述方法[J].石油学报,1999,20(4):24-28.YANG Feng-li,YIN Xing-yao,WU Guo-chen.A studyon seismic description method of the fluvial facies reser-voir in Chengdao Oilfield[J].Acta Petrolei Sinica,1999,20(4):24-28.
[2]姜素华,李涛,姜雨.东营凹陷网毯式油气成藏体系油气运聚探讨[J].中国石油大学学报:自然科学版,2007,31(5):12-17.JIANG Su-hua,LI Tao,JIANG Yu.Discussion on petro-leum migrating and accumulating of meshwork-carpet typeoil and gas pool-forming system in Dongying depression[J].Journal of China University of Pretroleum(Editionof Nature Science),2007,31(5):12-17.
[3]邹华耀,龚再升,滕长宇,等.渤中坳陷新构造运动断裂活动带PL19-3大型油田晚期快速成藏[J].中国科学:D辑,2011,41(4):482-490.ZOU Hua-yao,GONG Zai-sheng,TENG Chang-yu,etal.Late-stage rapid accumulation of the PL19-3 giant oil-field in an active fault zone during Neotectonism in theBozhong depression,Bohai Bay[J].Sci China Earth Sci(Ser D),2011,41(4):482-490.
[4]宋胜浩.从断裂带内部结构剖析油气沿断层运移规律[J].大庆石油学院学报,2006,30(3):17-20.SONG Sheng-hao.Analysis of hydrocarbon migrationbased on the interior structure of fault zone[J].Journalof Daqing Petroleum Institute,2006,30(3):17-20.
[5]罗明高,黄健全,唐洪.油气在储层孔喉中的微观运移机理探讨[J].沉积学报,1999,17(2):269-272.LUO Ming-gao,HUANG Jian-quan,TANG Hong.Aquantitative study on hydrocarbon migration mechanism inpores and throats of reservoir[J].Acta SedimentologicaSinica,1999,17(2):269-272.
[6]陈伟,吴智平,侯峰.油气沿断裂走向运移研究[J].中国石油大学学报:自然科学版,2010,34(6):12-17.CHEN Wei,WU Zhi-ping,HOU Feng.Study on hydro-carbon m igration along fault strike[J].Journal of ChinaUniversity of Pretroleum(Edition of Nature Science),2010,34(6):12-17.
[7]张善文,曾溅辉.断层对沾化凹陷馆陶组石油运移和聚集影响的模拟实验研究[J].地球科学——中国地质大学学报,2003,28(2):185-189.ZHANG Shan-wen,ZENG Jian-hui.An experiment studyon influence of fault on petroleum migration and accumu-lation in Guantao formation,Zhanhua depression[J].Earth Science—Journal of China University of Geosci-ences,2003,28(2):185-189.
[8]曾溅辉,王洪玉.层间非均质砂层石油运移和聚集的模拟实验研究[J].石油大学学报:自然科学版,2000,24(4):108-111.ZENG Jian-hui,WANG Hong-yu.Experimental study onoil migration and accumulation in the heterogeneous sandbeds of different porosity and permeability[J].Journal ofthe University of Petroleum,China(Edition of Natural Sci-ence),2000,24(4):108-111.
[9]姜丽娜,邹华耀.郯庐断裂带渤中-渤南段新构造运动期断层活动与油气运聚[J].石油与天然气地质,2009,30(4):462-468.JIANG Li-na,ZOU Hua-yao.Fault activities and hydro-carbon migration and accumulation during the Neotectonicperiod in the Bozhong Bonan segment of the Tanlu faultzone[J].Oil&Gas Geology,2009,30(4):462-468.
[10]吴智平,李伟,郑德顺,等.沾化凹陷中、新生代断裂发育及其形成机制分析[J].高校地质学报,2004,10(3):405-417.WU Zhi-ping,LI Wei,ZHENG De-shun,et al.Analy-sis on features and origins of the Mesozoic and Cenozoicfaults in Zhanhua sag[J].Geological Journal of ChinaUniversities,2004,10(3):405-417.
[11]孔凡仙,郭汝泰,王永诗,等.埕岛油田地质与勘探实践[M].北京:石油工业出版社,2000:42-43.
[12]李宏义,姜振学,董月霞,等.断层封闭能力的有限性研究及模拟实验[J].石油实验地质,2010,32(6):583-587.LI Hong-yi,JIANG Zhen-xue,DONG Yue-xia,et al.Geological study and physical simulation experiment onthe limitation of fault-sealing[J].Petroleum Geology&Experiment,2010,32(6):583-587.
[13]BOUVIER J D,SIJPESTEIJN K,KLUESNER D F,etal.Three-dimensional seismic interpretation and faultsealing investigations,Nun Ricer field,Niggeria[J].AAPG,1989,73(11):1397-1414.
[14]YIELDING G B,FREEMAN,NEEDHAM D T.Quanti-tative fault seal prediction[J].AAPG,1997,81(6):897-917.
[15]LINDSAY N G,MURPHY F C,WALSH J J,et al.Outcrop studies of shale smear on fault surfaces[J].In-ternational Association of Sedimentologists Special Pub-lication,1993,15(1):113-123.
[16]陈伟,吴智平,侯峰,等.断裂带内部结构特征及其与油气运聚关系[J].石油学报,2010,31(5):774-780.CHEN Wei,WU Zhi-ping,HOU Feng,et al.Internalstructures of fault zones and their relationship with hy-drocarbon migration and accumulation[J].Acta PetroleiSinica,2010,31(5):774-780.
[17]杨凤丽,印兴耀,吴国忱.埕岛油田河流相储层地震描述方法[J].石油学报,1999,20(4):24-28.YANG Feng-li,YIN Xing-yao,WU Guo-chen.A studyon seismic description method of the fluvial facies reser-voir in Chengdao Oilfield[J].Acta Petrolei Sinica,1999,20(4):24-28.
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